We all know how great “California Gurls” and “Teenage Dream” sound, but also amazing are her songs “Peacock,” which sounds like an updated version of Gwen Stefani‘s “Hollaback Girl,” and “Hummingbird Heartbeat,” a song definitely written about new fianceRussell Brand!

Katy also sounds great on ballads like “Pearl” and “Not Like The Movies,” proving we have yet to see what an amazing voice this young singer has.

It’s too bad this album couldn’t have been released earlier this summer, cause you are going to want to be blasting it at the beach for the next few weeks!